Abstract

We have investigated magnetotransport properties of CoFeB and interfaces by measuring the magnetoresistances of sputtered CoFeB-based exchange-biased spin valves and multilayers on the first antiferromagnetic coupling peak at in the current-perpendicular-to-plane geometry. The spin diffusion length and the spin-scattering asymmetry of and are estimated, and the interface specific resistance and the interfacial spin-scattering anisotropy of interfaces are constrained.

Received 21 November 2007Accepted 06 February 2008Published online 12 March 2008

Acknowledgments:

The authors would like to thank Professor Jack Bass, Dr. Reza Loloee, Dr. Nikoleta Theodoropoulou, and Amit Sharma of the Physics Department at Michigan State University for the joint development of MLs and CoFeB-based EBSVs and technical discussions as well. This work was supported by the KIST Institutional program, by the TND Frontier Project funded by KISTEP, and by the Korea Research Council of Fundamental Science & Technology (KRCF).